Help me with my test and the rest of my questions kayleenisgoofy insta

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is